Herbicidal isothiazole derivatives

Abstract

Certain N-[(heterocyclic)aminocarbonyl]isothiazolesulfonamides, such as methyl 4-[[(4-methoxy-6-methylpyrimidin-2-yl)aminocarbonyl]aminosulfonyl]-3-i sothiazolecarboxylate, are useful as herbicides and/or plant growth regulants.

What is claimed is: 
     
       1. A compound of the formula:   QSO.sub.2 NHCONHA     where   Q is ##STR13## R 5  is Cl, C 1  -C 3  alkoxycarbonyl or C 1  -C 3  alkyl; A is ##STR14## X is CH 3 , OCH 3 , OC 2  H 5 , CH 2  OCH 3 , or cyclopropyl; and   Y is CH 3 , OCH 3 , or and agriculturally suitable salts thereof.     
     
     
       2. A compound of claim 1 where X is CH 3 , OCH 3 , OC 2  H 5  or CH 2  OCH 3 . 
     
     
       3. An agricultural composition comprising an herbicidally effective amount of a compound of claim 1 and at least one of the following: (a) a surfactant and (b) a solid or liquid diluent. 
     
     
       4. An agricultural composition comprising an herbicidally effective amount of a compound of claim 2 and at least one of the following: (a) a surfactant and (b) a solid or liquid diluent. 
     
     
       5. A method for controlling the growth of undesired vegetation comprising applying to the locus of such vegetation an agriculturally effective amount of a compound of claim 1. 
     
     
       6. A method for controlling the growth of undesired vegetation comprrising applying to the locus of such vegetation an agriculturally effective amount of a compound of claim 2.